基于心冲击信号的心率异常自动检测方法

心冲击信号是一种非直接接触式的记录心肌收缩引起身体相应周期性震动的描记方法,其规律与心率相关.基于此原理,设计并实现了一套坐姿心冲击信号采集系统,同步采集一路单通道心电信号作为基准.针对心冲击信号微弱且易受干扰的特点,应用Duffing混沌振子提取含噪信号的周期性特征,并根据该特征提出了自动检测心率异常的简易相态分类方法.实验结果表明,即使预处理滤波后的心冲击信号中仍含有噪声,也可以通过该方法自动检测出心率异常的受试者.

Automatic Detection Based on Ballistocardiogram Signal for Abnormal Heart Rate

Ballistocardiogram is an instrument to record the periodical fluttering caused by myocardial contraction without direct contact.As a signal of heart rhythm,the records are inevitably in association with heart rate.For this reason,a ballistocardiogram signal acquiring system was designed and implemented for sitting subjects with the single-channel electrocardiogram signal acquired synchronously.The BCG signal is so weak and easy to be jammed that the chaotic Duffing oscillators should be used to extract the ...